Manual
Multi 1970i Operation
25
Note
At this point, the AutoCal TEC calibration can be terminated with <M>.
This corresponds to a single-point calibration. To do this, the instru-
ment uses the Nernst slope (-59.2 mV/pH at 25 °C) and determines the
asymmetry of the electrode.
5 When the measured value is stable, Ct2 appears.
6 Thoroughly rinse the electrode with distilled water.
7 If required, enter the temperature of the second buffer solution
with <▲> <▼> while keeping the <RUN/ENTER> key de-
pressed.
8 Immerse the pH electrode into the second buffer solution.
9 Press the <RUN/ENTER> key.
The AR display indicator flashes.
The electrode voltage (mV) or the buffer nominal value ap-
pears on the display. Example:
O
mV
S
/
1
Sal
O
LoBat nLF
Lin
Oxi
Tref25 Tref20
ARng
8
Time
Year
Ident
No.
Day.Month
Baud
Sal
cm
1/
K
/
%
RCL
REL2
pH
m
cm
S/
%
mg/l
2 4 8
°
C
TP
REL1
AR
Cal
TEC
Auto
/
1
Sal
S
69
LoBat nLF
Lin
Oxi
Tref25 Tref20
8
Time
Year
Ident
No.
Day.Month
Baud
Sal
cm
1/
K
/
%
RCL
REL2
pH
m
cm
S/
%
mg/l
2 4 8
3
°
C
TP
REL1
mV
AR
Cal
TEC
Auto
ARng
pH
700
pH
Store
AR
1
LoBat nLF
Lin
Oxi
Tref25 Tref20
ARng
8
Time
Year
Ident
No.
Day.Month
Baud
Sal
cm
1/
K
/
%
RCL
REL2
pH/mV
m
cm
S/
%
mg/l
Sal
O
S
pH
C
2 4 8
T2
°
C
TP
REL1
Cal
TEC
Auto